292 THE ZOOLOGIST. 



LITHOBIUS DUBOSCQUI, Brolemann, A CENTIPEDE 

 NEW TO THE BEITISH FAUNA. 



By Eichard S. Bagnall, F.L.S., F.E.S. 



(Hope Department of Zoology, University Museum, Oxford.) 



On several occasions I have observed a small Litbobiid, 

 which, when disturbed, instead of running swiftly to the edge of 

 a stone and perhaps dropping like the common L. crassipes, 

 immediately curls up and rolls off the surface of the stone that 

 has just been raised on to the ground. The small number of 

 antennal joints (up to twenty- eight) as compared with L. microps 

 puzzled me, and I therefore submitted examples to Dr. Brole- 

 mann, of Pau, who replied that the species was referable to 

 Lithubius duboscqiii, Brolemann. I have compared my examples 

 very carefully with Brolemann's description, a copy of which he 

 kindly sent me, aud they agree in every particular. 



As examples of this species will almost certainly be found 

 standing for L. microps in British collections, I give the follow- 

 ing roughly translated extracts from the original description. 



The rounded hind angles of all the dorsal scuta place it in 

 the section Arcliilithobius. 



LlTHOBIUS DUBOSCQUI, Bl*6l. 



Brolemann. ' La Feuille des jeunes Naturalistes,' iii e ser., 

 xxvi., Nos. 318-319, 1896. 



Body very convex, shining, somewhat parallel or more or 

 less narrowed anteriorly, constricted behind the head and 

 broadest about the eighth segment. Yellow, head reddish-brown 

 and the legs light, especially the two posterior pairs, which are 

 yellow-ochre or pale yellow. Length 5*5 to 7 mm., breadth 

 0*6 to 0-8 mm. 



Cephalic plate subcordiform, the posterior angles rounded 

 and the posterior border margined. Antennas very short, com- 

 posed of twenty-three to twenty-eight segments, broader than 



